50733721 has 4 divisors (see below), whose sum is σ = 51376000. Its totient is φ = 50091444.

The previous prime is 50733677. The next prime is 50733737. The reversal of 50733721 is 12733705.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50733721 - 2¹¹ = 50731673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50733721.

It is not an unprimeable number, because it can be changed into a prime (50730721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321021 + ... + 321178.

It is an arithmetic number, because the mean of its divisors is an integer number (12844000).

Almost surely, 2^50733721 is an apocalyptic number.

It is an amenable number.

50733721 is a deficient number, since it is larger than the sum of its proper divisors (642279).

50733721 is an equidigital number, since it uses as much as digits as its factorization.

50733721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642278.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 50733721 is about 7122.7607709371. The cubic root of 50733721 is about 370.1964406105.

The spelling of 50733721 in words is "fifty million, seven hundred thirty-three thousand, seven hundred twenty-one".